Struct lettre::message::header::Headers[][src]

pub struct Headers { /* fields omitted */ }
This is supported on crate feature builder only.

A set of email headers

Implementations

impl Headers[src]

pub const fn new() -> Self[src]

Create an empty Headers

This function does not allocate.

pub fn with_capacity(capacity: usize) -> Self[src]

Create an empty Headers with a pre-allocated capacity

Pre-allocates a capacity of at least capacity.

pub fn get<H: Header>(&self) -> Option<H>[src]

Returns a copy of an Header present in Headers

Returns None if Header isn’t present in Headers.

pub fn set<H: Header>(&mut self, header: H)[src]

Sets Header into Headers, overriding Header if it was already present in Headers

pub fn remove<H: Header>(&mut self) -> Option<H>[src]

Remove Header from Headers, returning it

Returns None if Header isn’t in Headers.

pub fn clear(&mut self)[src]

Clears Headers, removing all headers from it

Any pre-allocated capacity is left untouched.

pub fn get_raw(&self, name: &str) -> Option<&str>[src]

Returns a reference to the raw value of header name

Returns None if name isn’t present in Headers.

pub fn insert_raw(&mut self, name: HeaderName, value: String)[src]

Inserts a raw header into Headers, overriding value if it was already present in Headers.

pub fn append_raw(&mut self, name: HeaderName, value: String)[src]

Appends a raw header into Headers

If a header with a name of name is already present, appends , + value to it’s current value.

pub fn remove_raw(&mut self, name: &str) -> Option<(HeaderName, String)>[src]

Remove a raw header from Headers, returning it

Returns None if name isn’t present in Headers.

Trait Implementations

impl Clone for Headers[src]

impl Debug for Headers[src]

impl Default for Headers[src]

impl Display for Headers[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

Formats Headers, ready to put them into an email

impl TryFrom<&'_ Headers> for Envelope[src]

type Error = Error

The type returned in the event of a conversion error.

Auto Trait Implementations

impl RefUnwindSafe for Headers

impl Send for Headers

impl Sync for Headers

impl Unpin for Headers

impl UnwindSafe for Headers

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> Conv for T

impl<T> Conv for T

impl<T> FmtForward for T

impl<T> From<T> for T[src]

impl<T> Instrument for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T> Pipe for T where
    T: ?Sized

impl<T> Pipe for T

impl<T> PipeAsRef for T

impl<T> PipeBorrow for T

impl<T> PipeDeref for T

impl<T> PipeRef for T

impl<T> Tap for T

impl<T> Tap for T

impl<T, U> TapAsRef<U> for T where
    U: ?Sized

impl<T, U> TapBorrow<U> for T where
    U: ?Sized

impl<T> TapDeref for T

impl<T> ToOwned for T where
    T: Clone
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type Owned = T

The resulting type after obtaining ownership.

impl<T> ToString for T where
    T: Display + ?Sized
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impl<T> TryConv for T

impl<T> TryConv for T

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.